velocity model for China continent
remark: 1:Corad discon.; 2: Moho discon.
no   top-depth  P(km/s)  S(km/s) remark
1     0        5.71          3.40    0
2     16       6.53          3.77    1
3     40       7.97          4.45    2
4     100      7.97          4.45    0